How High Should A Chimney Be Above The Roof

If you ve been researching class a chimney pipes you ve probably heard of the 3 2 10 foot rule numerous times.

How high should a chimney be above the roof.

Flues need to be 600mm higher than the highest part of the roof within 3 metres. For gas vents or a type l vent this distance above the roof surface must be at least 2 ft 0 61m. Explained the chimney pipe must be a minimum of three feet above the roof but also two feet taller than anything within ten feet. Specifications aren t there to merely cause you problems.

The top of the chimney should be at least two feet higher than a level point ten feet away from a level line to the roof. Both above the flat roof and 2 feet above the point at which a horizontal line from the chimney would touch the highest portion of the nearest roof. And at least 2 higher than any portion of a building within 10. The top of a chimney pipe must extend at least 2 feet above the peak of the roof if the pipe is within 10 feet of the peak.

This specification makes sure steep roof slopes are cleared. Anon the chimney outlet needs to not only be proper height above the roof surface but proper distance from any opening that could take flue exhaust. The top of the chimney should be at least 3 ft 0 92 m above the roof surface. The chimney must extend at least 3 above the highest point where it passes through a roof.

The current code states that chimney openings need to be at least 300mm higher than the highest part of any roof within 3 6 metres of the chimney. The chimney opening above the roof of a sticks and bricks house should be 3 feet above the roof line or 2 feet above any part of the building within 10 whichever is higher. The 10 foot rule explains the clearance you need. Vertical blue line along the left side of the chimney in our photo.

They intend to make sure that the chimney draws properly and that a fire hazard does not occur. This rule refers to the proper height of the chimney pipe above the roof.